Mixing apparatus.



J; 0. SHREFFLER.

MIXING APPARATUS.

APPLICATION FILED 00117, 1901.

Patented Dec. 1, 1908.

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J. c. SHREPFLER.

MIXING APPABATUS. APPLIOAIION TILED 001.17, 1907.

Patented Dec. 1, 1908.

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J. 0. SHREFFLER.

- MIXING APPARATUS; APPLICATION FILED 00111; 1907.

' 905,375.- Patented Dec. 1, 1908.

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JAMES C. SHREFFLER, OF CHICAGO, ILLINOIS.

MIXING APPARATUS.

I Specification of Letters Patent.

Patented Dec. 1, 1908.

Application filed October 17, 1907. Serial No. 397,801.

.To all whom it may concern:

certain new and useful Improvements in Mixing Apparatus, of which the following, when taken in connection with the drawings accompanying and forming a part hereof, is a full and complete specification sufficient to enable those skilled in the art to which it pertains to understand, make, and use the same.

This invention relates to machines wherein Portland cement or other cementitious material and sand (or sand or gravel), broken stone and the like are brought together and mixed for the purpose of formlng, when wetted and allowed to dry, side walks, foundations, and the upper structure of buildings, and other constructions.

The object of this invention is to obtain a combined measurer and mixer by means of which cement may be properly prepared and thereafter such cement and sand, or other suitable material, delivered to a mixing trough and such cement and sand, or the substitutes therefor, ,can be continuously agitated and mixed and also, when desired,

suitably moistened and delivered from the machine in determined portions and in condition for immediate use.

A further object of the invention is to obtain a machine by means of which the pro portion of cement and sand, or the substitutes therefor, delivered to the machine, may be adjustably varied so that a desired proportion of cementitious material will be contained in the given quantity of the mixed product discharged from the machine.

A further object of the invention is to obtain a combined measuring and mixing machine in which the adjustments which are required to tion of the different materials supplied thereto can be easily understood and readily made. And a further object of the invention is to obtain a combined measurer and mixer whichis simple in construction, of great capacity, not liable to get out of order, and readily controlled.

To accomplish these ends I have made the construction illustrated in the drawings re- I ferred to and which embody the invention, in which draw1ngs Flgure 1 is an end elevation of a combined obtain a variation in the propor- A measuring and mixing machine. Fig. 2 is a top plan view of the sand receiving hopper of the machine, and of a portion of a sand conveyer. Fig. 3 is a top plan view of the combined measuring and mixing machine. Fig. 4 is a vertical sectional view of the machine on line H of Fig. 3, viewed in the direction indicated by the arrows. Fig. 5 is a side elevation of the machine. Fig. 6 is an elevation, on an enlarged scale, of a gate by means of which the discharge outlet from the cement pulverizing chamber of the machine is controlled. Fig. 7 is a side elevation, on an enlarged scale, of the gate to the discharge outlet of the cement pulverizing chamber of the machine. Fig. 8 is an elevation of a modification of the mechanism for receiving and transferring cement from the pulverizer of the apparatus to the mixer thereof, and Fig. 9 is a vertical section of the cement receiving and transferring mechanism of the apparatus.

A reference letter applied to designate a given part is used to indicate such part throughout the several figures of the drawings, wherever the same appears.

A is the frame of the machine.

B is a platform on frame A.

C is a hopper for the reception of cement or other like material.

D is a well below the hopper C forming, and hereinafter referred to as, a cement pulverizing chamber.

d is a side wall of pulverizing chamber D. Side wall (Z is provided with hole cl therein constituting the discharge outlet of the pulverizing chamber.

E is a vertically movable gate arranged to cover the hole cl when closed.

6 is a framework secured to the gate E and F is a rotatable screw threaded shaft squared at f on its upper end for a wrench and turning at its lower end in a recess on boss which is provided therefor on bearing G. The vertical shaft F extends through part f and through the frame 6 so that the turning of such shaft moves the gate E vertically.

g, g, are removable beaters or pulverizers on shaft G in pulverizing chamber D. ghzgt G is rotatably mounted in bearings g, g, are removable paddles on shaft G outside of the pulverizing chamber D.

H is a mixing trough.

\Vhen the gate E is raised into the position thereof illustrated in Fig. 1 and the shaft G is rotated cement contained in pulverizing chamber D is beaten and agitated by beaters g, g, and further such beaters being made with the faces thereof at an angle to the shaft G the cement agitated by such beaters is also forced towards the outlet (hole cl) and is discharged from such chamber underneath the gate E onto the platform B in the path of movementof the paddles g, g, and

is, by such paddles, brushed or scraped from comprises flexible belt 7', preferably a link belt chain, and buckets j, j.

j is the floor of runway z. Buckets j, j, are not in contact with the floor j so that sand escaping from such buckets while being elevated from the sand hopper I will flow back into such sand hopper. A determined quantity of sand is thus raised from sand hopper I and delivered into the trough H adjacent to the receiving end of such trough at each revolution of the belt j.

K is a shaft rotatably mounted in bearings 70, 70, to extend longitudinally above the trough H the length of such trough.

In the modification illustrated in Figs. 8 and 9 the rotatable shaft G mounted in bearings g, 9, disk H and partition walls h', /L, are attached to the disk to obtain receptacles H, H, (open at the top and on one side), and pins h, h, are attached to disk H in the path of movement of arm or paddle g on shaft G. From one to four of the arms or paddles 9 are used. hen this modification is employed the gate E to aperture (5 is not required, and a variation of the quantity of cement delivered from pulverizing chamber D to mixing chamber H is effected by varying the number of arms or paddles g on shaft G.

K is a shaft rotatably mounted in bearings on frame A and L is a shaft rotatably mounted in hopper I.

L is a wheel rigidly mounted on shaft K' and Z is a wheel rigidly mounted on shaft L. Flexible belt of conveyer J extends over the wheels L, Z, and motion is imparted to the conveyer by the rotation of shaft K and wheel L.

J is a bar tying the foot of conveyer J in an adjusted position relative to frame A.

M, M, are beaters, or agitators on shaft K.

N is a counter shaft rotatablymounted in journal bearings n, n, on frame A.

O is a pulley rigidly secured to shaft N and O is a loose pulley on such shaft.

P, p, are, respectively, driving wheels (preferably sprocket wheels), rigidly secured on shaft N and Q, g, are, respectively, sprocket chains fitting to and extending over, to be driven by, the wheels P, p. The flexible belt Q extends over wheel R which is rigidly secured on shaft K and drives such shaft, and the belt 9 extends over the wheel 7" which is rigidly secured on shaft K and drives such shaft. Shaft G is driven by flexible belt S, which is preferably a link belt and extends over wheels T, t, (preferably sprocket wheels), which are, respectively, rigidly secured on shafts K and G.

U is a tiltable table on frame A underneath the discharge end of trough H. This table U is mounted pivotally on pivots or bolts u, a, and is provided with a handle a by means of which it may be turned from a horizontal position to unload material discharged thereonto from the trough H.

V is a latch to hold the table U in a horizontal plane and V is the handle of the latch V.

W is a water pipe which is provided with valve W and sprinkler The upper end of pipe )V may be turned, joint X being provided to permit such turning and thereby the sprinkler TV moved nearer to or further from the discharge end of the mixing trough H than the position in which such sprinkler is shown in the drawings.

It will be observed that the beaters M, M, are provided with faces set at an angle to the axial line of shaft K and because thereof the sand and cement which is agitated by such beaters is also moved by such heaters from the receiving end of the trough H to the discharge end of such trough and there forced from the trough onto the horizontal table U.

hen cement is supplied to hopper C, sand or gravel to hopper I, with the gate E raised a given height, and the shaft N is rotated the operation of the machine is as follows ;Shafts K, K, are, respectively rotated by belts Q, q and shaft G is rotated by belt S. Rotation of the shaft K actuates the beaters or agitators M in mixing trough H; rotation of shaft G actuates the heaters or agitators g in pulverizing chamber D and rotation of the shaft K actuates the conveyer J. Cement or other like material is continuously pulverized in pulverizing chamber D and delivered from such chamber in determined quantity from such chamber underneath the gate E in the path of the paddles g, and by such paddles brushed or scraped into the mixing trough H and at the same time sand is continuously conveyed in given quantity from sand hopper I and delivered into mixing trough H at about the point in said trough where the cement is clelivered thereinto.

The sand and gravel and the cement delivered into the trough H as last above described is thoroughly mixed and forced to the delivery end of such trough by the rotation of the beaters M. As such cement and sand so mixed is brought under the water pipe water is thrown thereonto through sprinkler and the wettecl mass is discharged from the trough H onto the table U from which table it is unloaded by disengaging latch V and turning the table, or if preferred, such mixed material may be shoveled off from such table.

Having thus described my invention, the construction of a machine embodying the same and the operation of such machine, what I claim as new and desire to secure by Letters Patent of the United States is,-

l. The combination of a cement pulverizing chamber provided with a discharge opening, a rotatable shaft, movable beaters in the chamber, such beaters mounted on the shaft and arranged to agitate the contents of the chamber and to force such contents towards the discharge opening, a cement hopper arranged to discharge into the pulverizing chamber, an adjustable gate to control the discharge opening of the chamber, a mixing trough, removable paddles on the beater shaft outside the chamber and arranged to deposit cement which has been discharged from the pulverizing chamber into the mixing trough adjacent to the receiving end of such trough, a sand hopper, and a conveyer arranged to deliver a determined quantity of sand from the sand hopper into the mixing trough adjacent to the receiving end of such trough; substantially as described.

2. The combination of a hopper, a pulverizing chamber, such hopper arranged to discharge into the pulverizing chamber and such chamber provided with an outlet, a gate to the outlet, means to control the position of the gate, a mixing trough, a rotatable shaft in the chamber, said shaft extending through one of the walls of the chamber, a plurality of paddles removably mounted on the said shaft outside the chamber and arranged to move material discharged from the chamber into the trough, beaters in the pulverizing chamber removably mounted on the shaft, an

additional hopper, a conveyer arranged to deliver material in such additional hopper to the trough, and means to actuate the shaft and the conveyer; substantially as described.

3. The combination of a frame, a hopper, a pulverizing chamber, such hopper arranged to discharge into the pulverizing chamber, and such chamber provided with an outlet, a gate to the outlet, a screw threaded shaft associated with the gate to control the position of such gate, a. mixing trough, a rotatable shaft in the chamber, a plurality of beaters on the shaft, such beaters arranged to agitate and force to the gate controlled outlet material in the chamber, a plurality of paddles removably attached to the shaft of the pulverizing chamber, such paddles outside of the chamber and adjacent to the discharge outlet thereof, an additional hopper, a conveyer between the additional hopper and the trough, and means to actuate the shaft and the conveyer; substantially as described.

4. The combination of a frame, a hopper, a pulverizing chamber, such hopper arranged to discharge into the pulverizing chamber and such chamber provided with an outlet, a gate to the outlet, a screw threaded shaft associated with the gate to control the position of such gate, a mixing trough, a rotatable shaft in the chamber, a plurality of beaters on the shaft, such beaters arranged to agitate and force to the gate controlled outlet material in the chamber, a plurality of addles removably attached to the shaft of the pulverizing chamber and arranged to deliver material which has been discharged from the pulverizing chamber into the mixing trough, an additional hopper, a conveyer between the additional hopper and the trough, such conveyer arranged to deliver a measured quantity of material in a given time to the mixing trough adjacent to the material delivered thereinto by the paddles, and means to actuate the shaft and conveyer; substantially as described.

JAMES C. SHREFFLER.

In the presence of- MARTIN S. STECKEL, WVILLIAM E. SHREFFLER. 

